Rotational flow atomization device and aviation engine main combustion chamber with same

Abstract

The invention discloses a rotational flow atomization device and an aviation engine main combustion chamber with the same. The rotational flow atomization device comprises an inner rotational flow device, an outer rotational flow device, valves, supporting plates, springs and nozzle shells. The inner rotational flow device, the outer rotational flow device and the supporting plates are connected with the nozzle shells; sliding rail grooves, main jet openings and auxiliary jet openings are formed in the nozzle shells; the valves are embedded into the sliding rail grooves in the inner sides of the nozzle shells to constitute sliding pairs; through holes are formed in the valves; bosses are arranged on the supporting plates; the springs are located between the valves and the supporting platesand positioned through the bosses on the supporting plates; and through holes are formed in the bosses and are opposite to the through holes in the valves. According to the rotational flow atomization device, fractional combustion in the main combustion chamber is simply achieved, a plurality of oil circuits do not need to be arranged, the oil circuit cooling difficulty is reduced, the structurecomplexity is reduced, and meanwhile the design requirement for an oil pump is reduced.

Description

technical field [0001] The invention relates to the technical field of an aero-engine main combustion chamber, in particular to a swirl atomization device and an aero-engine main combustion chamber with the same. Background technique [0002] The swirl atomization device at the head of the flame tube in the main combustion chamber of an aero-engine generally adopts the structural form of a single-stage or multi-stage swirler combined with a centrifugal pressure atomization nozzle. With the continuous development of aero-engine technology, the pressure in the main combustion chamber is gradually increasing, the aerodynamic force is enhanced, and the resistance of oil droplets in the airflow increases, which makes the fuel near the nozzle more concentrated, causing problems such as smoke, carbon deposition, and reduced combustion efficiency. Moreover, the increasingly stringent aero-engine exhaust pollution restrictions also put forward higher requirements for the design of th...

AI Technical Summary

Problems solved by technology

With the continuous development of aero-engine technology, the pressure in the main combustion chamber is gradually increased, the aerodynamic force is enhanced, and the resistance of oil droplets in the airflow increases, which makes the fuel near the nozzle more concentrated, causing problems such as smoke, carbon deposition, and reduced combustion efficiency.

Images